Finding the Third Proportional to 12,872.67 and 20,345.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,872.67 : 20,345.55 = 20,345.55 : x
2. Step 2: Convert to fraction form
   12,872.67/20,345.55 = 20,345.55/x
3. Step 3: Cross multiply
   12,872.67x = 20,345.55 × 20,345.55
4. Step 4: Simplify right side
   12,872.67x = 413,941,595.54
5. Step 5: Solve for x
   x = 413,941,595.54/12,872.67
6. Step 6: Final answer
   x = 32,156.62